HVAC Not Cold Enough, A/C Compressor Does Not Engage (Repair Engine Compartment Wiring Harness Near Idler Arm)
| Subject: | HVAC Not Cold Enough, A/C Compressor Does Not Engage (Repair Engine Compartment Wiring Harness Near Idler Arm) |
| Models: | 2003-2005 Cadillac Escalade, Escalade ESV, Escalade EXT |
| 2003-2005 Chevrolet Avalanche, Silverado, Suburban, Tahoe |
| 2003-2005 GMC Sierra, Yukon, Yukon XL |
| 2003-2005 HUMMER H2 |
| with Air Conditioning (RPOs CJ2, CJ3) |
Condition
Some customers may comment that the heating, ventilation and air conditioning (HVAC) system does not get cold enough. Technicians may find that the air conditioning (A/C) compressor does not engage and the "A/C COMP" fuse located in the underhood fuse block may be open.
Cause
This condition may be caused by the engine compartment wiring harness rubbing on the idler arm. The plastic conduit covering the wiring harness may conceal the damage to the wires.
Correction
Technicians are to repair the engine compartment wiring harness as necessary and replace the "AC COMP" fuse. The engine compartment wiring harness is to be routed away from the idler arm and secured with plastic tie straps.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
N6642 | Wiring And/Or Connector - HVAC System - Repair Or Replace | Use published labor operation time |
